並列タイトル等Statistical Analysis on Aperture Diameter of Flat C/C Grids Using Image Scanner
タイトル（掲載誌）宇宙航空研究開発機構研究開発報告: イオン加速グリッド耐久認定用数値解析 JIEDI (JAXA Ion Engine Development Initiatives) ツールの研究開発ワークショップ論文集 = JAXA Research and Development Report
一般注記Workshop on research and development of JIEDI (JAXA Ion Engine Development Initiatives) tool for numerical evaluation of ion engine grid lifetime
The erosion of accelerator grid aperture due to impingement of charge-exchange ions limits the normal operation of the microwave discharge ion engine, in which long life and high reliability are inherent because of electrode-less plasma generations. A commercially available image scanner and image-analysis software enabled to statistically analze the diameters of the huge number of apertures in the flat C/C grids. This measurement method was applied to the accelerator grids of mu10 ion engine after the 20,000 hour endurance test and mu20 ion engine under ion machining in 30 hours. As a result, it was revealed that the erosion distribution of the mu10 grid had the azimuthal dependence. Moreover, we obtained the design guide for the next mu20 accelerator grid, to make the apertures with tapered shape on the side of upstream.
形態: カラー図版あり
Physical characteristics: Original contains color illustrations
資料番号: AA0064642007
レポート番号: JAXA-RR-09-004
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ